On Wed, Jul 27, 2011 at 12:19:14PM -0700, Stephen Boyd wrote: > MSMs post 8x50 have 2Mb at the beginning of RAM reserved for > shared memory. Since the kernel hasn't typically been told this > RAM exists, PHYS_OFFSET has been set to 0xN0200000 and the memory > atags passed to the kernel have matched. This doesn't play nicely > with things such as AUTO_ZRELADDR, which doesn't work at all, and > dynamic phys to virt, which requires an MSM specific workaround. > > Work around these issues by telling the kernel RAM starts at > 0xN0000000 (it actually does) and fixup the atags from the > bootloader (if necessary) to say the same. In addition, make sure > to set TEXT_OFFSET at least 2Mb beyond the start of RAM so that > the kernel doesn't end up being decompressed into shared memory. > > After doing this, AUTO_ZRELADDR should work on MSM with no > problems and ARM_PATCH_PHYS_VIRT_16BIT should no longer be > necessary. > > Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> > Acked-by: Nicolas Pitre <nicolas.pitre@xxxxxxxxxx> > --- Acked-by: David Brown <davidb@xxxxxxxxxxxxxx> -- Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum. -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
